期刊
FUNCTIONAL COMPOSITES AND STRUCTURES
卷 3, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2631-6331/ac069c
关键词
nanocomposite; UV-shielding film; 3D nanostructure; proximity-field nanopatterning (PnP)
资金
- National Research Foundation of Korea (NRF) - Ministry of Science and ICT [NRF-2020M3D1A1110522]
- National Research Foundation of Korea [2020M3D1A1110522] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This paper introduces a novel concept of transparent nanocomposite with a three-dimensional ZnO thin-shell, providing efficient UV-shielding performance and the potential for large-scale production using proximity-field nanoPatterning and atomic layer deposition techniques.
This paper introduces a nontrivial concept of a transparent nanocomposite with a three-dimensional (3D) ZnO thin-shell, as an ultraviolet (UV)-shielding reinforcement which absorbs all ranges of UV light, including UV-A (320 nm-400 nm). The continuous and ordered geometry of the 3D ZnO thin-shell, uniformly distributed in an epoxy matrix, efficiently captures incident UV light by repeatedly scattering and absorbing UV light at the epoxy-ZnO interfaces. Proximity-field nanoPatterning and atomic layer deposition can be employed to produce a 3D ZnO thin-shell array on a large scale (>1 inch(2)). The fabricated 3D ZnO/epoxy nanocomposite film exhibits excellent UV-shielding performance, blocking 95.20% of UV-A light. Transmittance at the edge of the UV-A range (400 nm) is suppressed by 64% (from 86% to 31%), while transmittance in the visible range (550 nm) is retained (from 90% to 75%). Moreover, the UV-shielding capability of the 3D nanocomposite film can be tailored by controlling the ZnO shell thickness from 0 nm to 45 nm. The 3D ZnO/epoxy nanocomposite provides a good option for next-generation transparent UV-shielding films.
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